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Novel strategy stabilizes zinc-ion batteries

According to research published in Advanced Functional Materials recently, a team led by Prof. HU Linhua. from Hefei Institutes of Physical Science (HFIPS), Chinese Academy of Science (CAS) found . ....

Yingke Ren , Hong Zhang , Tingting Wei , Zhaoqian Li , Daming Zhu , Yang Huang , Peng Tan , Unity Stacked , Stable Zinc , Advanced Functional Materials , Aqueous Zinc Ion Batteries , Zinc Ion Batteries ,

"High Energy Density Aqueous Zinc–Chalcogen (S, Se, Te) Batteries: Rece" by Xin Wang, Liyang Liu et al.

Zinc-ion batteries with chalcogen-based (S, Se, Te) cathodes have emerged as a promising candidate for utility-scale energy storage systems and portable electronics, which have attracted rapid attention and offer tremendous opportunities owing to their excellent energy density, on top of the advantages of aqueous Zn batteries including cost-effectiveness, inherent safety, and eco-friendliness. Here, a comprehensive overview on the basic mechanism of zinc–chalcogen batteries with their great advantages and intrinsic issues is provided. More detailed recent progress is summarized and the existing challenges with promising strategies are provided as well. First, four specific types of batteries are presented, including: zinc–sulfur, zinc–selenium, zinc–selenium sulfide, and zinc–tellurium batteries. Second, the remaining challenges within chalcogen-based cathodes in the material preparation, physicochemical properties, and battery performance are summarized and discussed. Meanwh ....

Chalcogen Based Cathodes , Energy Density , Energy Storage Systems , Zinc Ion Batteries ,

"Cation Defect-Engineered Boost Fast Kinetics of Two-Dimensional Topolo" by Yu Zong, Haichao Chen et al.

The challenge with aqueous zinc-ion batteries (ZIBs) lies in finding suitable cathode materials that can provide high capacity and fast kinetics. Herein, two-dimensional topological Bi2Se3 with acceptable Bi-vacancies for ZIBs cathode (Cu-Bi2−xSe3) is constructed through one-step hydrothermal process accompanied by Cu heteroatom introduction. The cation-deficient Cu-Bi2−xSe3 nanosheets (≈4 nm) bring improved conductivity from large surface topological metal states contribution and enhanced bulk conductivity. Besides, the increased adsorption energy and reduced Zn2+ migration barrier demonstrated by density-functional theory (DFT) calculations illustrate the decreased Coulombic ion-lattice repulsion of Cu-Bi2−xSe3. Therefore, Cu-Bi2−xSe3 exhibits both enhanced ion and electron transport capability, leading to more carrier reversible insertion proved by in situ synchrotron X-ray diffraction (SXRD). These features endow Cu-Bi2−xSe3 with sufficient specific capacity (320 mA h g ....

Ation Defect , N Situ Synchrotronx Ray Diffraction , Wo Dimensional Bismuth Selenide , Zinc Ion Batteries ,